Sea marbles polished by the power of nature, collected from the sea in Wakayama Prefecture. ⚠️ All sea glass and sea marbles on sale, including past listings, are natural sea glass collected on the beach. No artificial processing such as polishing or coloring is done. After collection, they are washed with water and dried before being listed. Images of the items in wet and dry conditions are provided. ※ The PET bottle cap in the image is for size comparison and is not included in the product. As they are natural items, there may be scratches, stains, and chips. Please purchase only if you understand and accept these imperfections.